This marine drain port is designed for demanding aquatic environments. It features a white circular flange and a black central port disc, providing resistance to the elements. It functions as an anti-backflow port, allowing water to drain out smoothly while preventing unwanted water from reversing into the boat's drainage system. With a compact profile measuring 71.3 mm in diameter and 8.4 mm thick, this low-profile backflow preventer fits seamlessly into deck or hull layouts. Installation is quick and straightforward with four built-in 4 mm screw holes for a flush and stable mount. Suitable for speedboats, family yachts, or fishing boats.
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